diff options
Diffstat (limited to 'home-manager/modules/programs/command-not-found')
-rw-r--r-- | home-manager/modules/programs/command-not-found/command-not-found.nix | 59 | ||||
-rw-r--r-- | home-manager/modules/programs/command-not-found/command-not-found.pl | 44 |
2 files changed, 103 insertions, 0 deletions
diff --git a/home-manager/modules/programs/command-not-found/command-not-found.nix b/home-manager/modules/programs/command-not-found/command-not-found.nix new file mode 100644 index 00000000000..b79fde0f619 --- /dev/null +++ b/home-manager/modules/programs/command-not-found/command-not-found.nix @@ -0,0 +1,59 @@ +# Adapted from Nixpkgs. + +{ config, lib, pkgs, ... }: + +with lib; + +let + cfg = config.programs.command-not-found; + commandNotFound = pkgs.substituteAll { + name = "command-not-found"; + dir = "bin"; + src = ./command-not-found.pl; + isExecutable = true; + inherit (pkgs) perl; + inherit (cfg) dbPath; + perlFlags = concatStrings (map (path: "-I ${path}/lib/perl5/site_perl ") [ + pkgs.perlPackages.DBI + pkgs.perlPackages.DBDSQLite + pkgs.perlPackages.StringShellQuote + ]); + }; + + shInit = commandNotFoundHandlerName: '' + # This function is called whenever a command is not found. + ${commandNotFoundHandlerName}() { + local p=${commandNotFound}/bin/command-not-found + if [ -x $p -a -f ${cfg.dbPath} ]; then + # Run the helper program. + $p "$@" + else + echo "$1: command not found" >&2 + return 127 + fi + } + ''; + +in { + options.programs.command-not-found = { + enable = mkEnableOption "command-not-found hook for interactive shell"; + + dbPath = mkOption { + default = + "/nix/var/nix/profiles/per-user/root/channels/nixos/programs.sqlite"; + description = '' + Absolute path to <filename>programs.sqlite</filename>. By + default this file will be provided by your channel + (nixexprs.tar.xz). + ''; + type = types.path; + }; + }; + + config = mkIf cfg.enable { + programs.bash.initExtra = shInit "command_not_found_handle"; + programs.zsh.initExtra = shInit "command_not_found_handler"; + + home.packages = [ commandNotFound ]; + }; +} diff --git a/home-manager/modules/programs/command-not-found/command-not-found.pl b/home-manager/modules/programs/command-not-found/command-not-found.pl new file mode 100644 index 00000000000..997dfec649b --- /dev/null +++ b/home-manager/modules/programs/command-not-found/command-not-found.pl @@ -0,0 +1,44 @@ +#! @perl@/bin/perl -w @perlFlags@ + +use strict; +use DBI; +use DBD::SQLite; +use String::ShellQuote; +use Config; + +my $program = $ARGV[0]; + +my $dbPath = "@dbPath@"; + +my $dbh = DBI->connect("dbi:SQLite:dbname=$dbPath", "", "") + or die "cannot open database `$dbPath'"; +$dbh->{RaiseError} = 0; +$dbh->{PrintError} = 0; + +my $system = $ENV{"NIX_SYSTEM"} // $Config{myarchname}; + +my $res = $dbh->selectall_arrayref( + "select package from Programs where system = ? and name = ?", + { Slice => {} }, $system, $program); + +if (!defined $res || scalar @$res == 0) { + print STDERR "$program: command not found\n"; +} elsif (scalar @$res == 1) { + my $package = @$res[0]->{package}; + if ($ENV{"NIX_AUTO_RUN"} // "") { + exec("nix-shell", "-p", $package, "--run", shell_quote("exec", @ARGV)); + } else { + print STDERR <<EOF; +The program ‘$program’ is currently not installed. You can install it by typing: + nix-env -iA nixos.$package +EOF + } +} else { + print STDERR <<EOF; +The program ‘$program’ is currently not installed. It is provided by +several packages. You can install it by typing one of the following: +EOF + print STDERR " nix-env -iA nixos.$_->{package}\n" foreach @$res; +} + +exit 127; |